Stop valve and air conditioner having the same

An air conditioner, comprising a stop valve, wherein the stop valve comprises:

• a valve seat defining a valve chamber and a fitting chamber in communication with the valve chamber, wherein the fitting chamber is located at a first end face of the valve chamber and the valve chamber is provided with two ports in communication with the valve chamber;
• a lantern ring fitted in one of the two ports;
• a valve disc comprising a fitting part and a stopping part disposed to the fitting part, wherein the fitting part is threadedly fitted with the fitting chamber, the stopping part is located in the valve chamber and threadedly fitted with the valve chamber, and the stopping part is configured to touch the first end face or the lantern ring to communicate or block the two ports;
• and
• an elastic sealing member disposed at an end face of the stopping part facing the lantern ring and configured to touch an end face of the lantern ring to block a communication of the two ports.